diff --git a/manual/Tasks/available.html b/manual/Tasks/available.html
index d29e6abf5..9b8073413 100644
--- a/manual/Tasks/available.html
+++ b/manual/Tasks/available.html
@@ -26,7 +26,7 @@
 
 <h2 id="available">Available</h2>
 <h3>Description</h3>
-<p>Sets a property if a resource is available at runtime. This resource can be a file, a directory,
+<p>Sets a property if a resource is available at run time. This resource can be a file, a directory,
 a class in the classpath, or a JVM system resource.</p>
 <p>If the resource is present, the property value is set to <q>true</q> by default; otherwise, the
 property is not set. You can set the value to something other than the default by specifying
diff --git a/manual/Tasks/projecthelper.html b/manual/Tasks/projecthelper.html
index 46d17b3db..731b3e8b3 100644
--- a/manual/Tasks/projecthelper.html
+++ b/manual/Tasks/projecthelper.html
@@ -28,7 +28,7 @@
 <p><em>Since Ant 1.8.2</em></p>
 <h3>Description</h3>
 <p>This task is provided for the purpose of allowing the user to install a different ProjectHelper
-at runtime.</p>
+at run time.</p>
 <p>The helpers will be added after all the already registered helpers, but before the default one
 (<code>ProjectHelper2</code>)</p>
 <p>See the description of Apache Ant's <a href="../projecthelper.html">Project Helper</a> for more
diff --git a/manual/Tasks/propertyhelper.html b/manual/Tasks/propertyhelper.html
index 64ed2c7e5..7c59e7405 100644
--- a/manual/Tasks/propertyhelper.html
+++ b/manual/Tasks/propertyhelper.html
@@ -28,7 +28,7 @@
 <p><em>Since Ant 1.8.0</em></p>
 <h3>Description</h3>
 <p>This task is provided for the purpose of allowing the user to <strong>(a)</strong> install a
-different <code>PropertyHelper</code> at runtime, or <strong>(b)</strong> (hopefully more often)
+different <code>PropertyHelper</code> at run time, or <strong>(b)</strong> (hopefully more often)
 install one or more <code class="code">PropertyHelper</code> Delegates into
 the <code class="code">PropertyHelper</code> active on the
 current <code class="code">Project</code>. This is somewhat advanced Apache Ant usage and assumes a
diff --git a/manual/Tasks/rmic.html b/manual/Tasks/rmic.html
index 1ffdfbdc5..cd3247af8 100644
--- a/manual/Tasks/rmic.html
+++ b/manual/Tasks/rmic.html
@@ -229,8 +229,8 @@ either while running Java 11+ unless you fork the task and explicitly specify an
     parent directory for any source files AND the output directory.</li>
   <li><var>destdir</var> can be used to specify the output directory, allowing for <var>base</var>
     to be used as the parent directory for any source files.</li>
-  <li>At least one of either <var>base</var> or <var>destdir</var> must be specified and exist, or a
-    runtime error will occur.</li>
+  <li>At least one of either <var>base</var> or <var>destdir</var> must be specified and exist, or
+    an error will occur at run time.</li>
 </ul>
 
 <h3>Parameters specified as nested elements</h3>
diff --git a/manual/develop.html b/manual/develop.html
index 6806ced98..e2f713aae 100644
--- a/manual/develop.html
+++ b/manual/develop.html
@@ -96,18 +96,18 @@ one doesn't really matter to Ant, using all lower case is a good convention, tho
     actual <em>addConfigured</em> method is not called.</li>
 
   <li>All attributes of this task get set via their corresponding <code class="code">setXXX()</code>
-    methods, at runtime.</li>
+    methods, at run time.</li>
 
   <li>The content character data sections inside the XML element corresponding to this task is added
-    to the task via its <code class="code">addText()</code> method, at runtime.</li>
+    to the task via its <code class="code">addText()</code> method, at run time.</li>
 
   <li>All attributes of all child elements get set via their
-    corresponding <code class="code">setXXX()</code> methods, at runtime.</li>
+    corresponding <code class="code">setXXX()</code> methods, at run time.</li>
 
   <li>If child elements of the XML element corresponding to this task have been created
     for <code class="code">addConfiguredXXX()</code> methods, those methods get invoked now.</li>
 
-  <li id="execute"><code class="code">execute()</code> is called at runtime.  If <q>target1</q>
+  <li id="execute"><code class="code">execute()</code> is called at run time.  If <q>target1</q>
     and <q>target2</q> both depend on <q>target3</q>, then running <kbd>ant target1 target2</kbd>
     will run all tasks in <q>target3</q> twice.</li>
 </ol>
diff --git a/manual/properties.html b/manual/properties.html
index d2a791c8d..3cfb82828 100644
--- a/manual/properties.html
+++ b/manual/properties.html
@@ -26,7 +26,7 @@
   <h1>Properties</h1>
 
   <p>Properties are key-value pairs where Apache Ant tries to expand <code>${key}</code>
-    to <code>value</code> at runtime.</p>
+    to <code>value</code> at run time.</p>
 
   <p>There are many tasks that can set properties, the most common one is
     the <a href="Tasks/property.html">property</a> task.  In addition properties can be defined
diff --git a/manual/tasksoverview.html b/manual/tasksoverview.html
index 7e69b5103..d4ef43087 100644
--- a/manual/tasksoverview.html
+++ b/manual/tasksoverview.html
@@ -854,7 +854,7 @@ documentation.</p>
     <td><a href="Tasks/available.html">Available</a></td>
     <td><p>Sets a property if a specified file, directory, class in
      the classpath, or JVM system resource is available at
-     runtime.</p></td>
+     run time.</p></td>
   </tr>
 
   <tr>